ZIP codes in Robertson County
11 ZIPs touch Robertson County, Texas. The blue dashed line is the county border; orange ZIPs reach into it.
11
ZIP codes
6
cross the county line
48,257
people in these ZIPs
254
counties in TX
Most people
Robertson County ZIP list
More counties in Texas
- Reagan County2
- Real County8
- Red River County9
- Reeves County6
- Refugio County5
- Roberts County5
- Rockwall County9
- Runnels County12
- Rusk County21
- Sabine County6
- San Augustine County4
- San Jacinto County8
Questions people actually ask
How many ZIP codes are in Robertson County, Texas?
11 ZIP codes reach into Robertson County, including 1 PO Box or single-address ZIPs placed by the town they serve. 6 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Robertson County has the most people?
77808 (Bryan) has about 15,797 residents, the most of any ZIP touching Robertson County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Robertson County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Robertson County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from